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Hyperandrogenic Anovulation
Polycystic ovary syndrome, or PCOS, is the most common endocrine disorder in women of reproductive age. The syndrome is named after the characteristic cysts which may form on the ovaries, though it is important to note that this is a sign and not the underlying cause of the disorder. Women with PCOS may experience irregular menstrual periods, heavy periods, excess hair, acne, pelvic pain, difficulty getting pregnant, and patches of thick, darker, velvety skin. The primary characteristics of this syndrome include: hyperandrogenism, anovulation, insulin resistance, and neuroendocrine disruption. A review of the international evidence found that the prevalence of PCOS could be as high as 26% among some populations, though ranges between 4% and 18% are reported for general populations. Despite its high prevalence, the exact cause of PCOS remains uncertain and there is no known cure. Definition Two definitions are commonly used: * NIH : In 1990 a consensus workshop spon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hells Angels Motorcycle Club
The Hells Angels Motorcycle Club (HAMC) is a worldwide outlaw motorcycle club whose members typically ride Harley-Davidson motorcycles. In the United States and Canada, the Hells Angels are incorporated as the Hells Angels Motorcycle Corporation. Common nicknames for the club are the "H.A.", "Red & White", "HAMC", and "81". With a membership between 3,000 and 3,600 and 467 chapters in 59 countries, the HAMC is one of the largest motorcycle clubs in the world. Many police and international intelligence agencies, including the United States Department of Justice and Europol, consider the club an organized crime syndicate. History The Hells Angels originated on March 17, 1948, in Fontana, California, when several small motorcycle clubs agreed to merge.''The Secret Life of Bikers'' by Jerry Langton. Location 19.5/477. HarperCollings:2018 Otto Friedli, a World War II veteran, is credited with starting the club after breaking from the Pissed Off Bastards motorcycle club over a feu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hahnium
Dubnium is a Synthetic element, synthetic chemical element with the Symbol (chemistry), symbol Db and atomic number 105. It is highly radioactive: the most stable known isotopes of dubnium, isotope, dubnium-268, has a half-life of about 16 hours. This greatly limits extended research on the element. Dubnium does not occur naturally on Earth and is produced artificially. The Soviet Joint Institute for Nuclear Research (JINR) claimed the first discovery of the element in 1968, followed by the American Lawrence Berkeley Laboratory in 1970. Both teams proposed their names for the new element and used them without formal approval. The long-standing dispute was resolved in 1993 by an official investigation of the discovery claims by the Transfermium Working Group, formed by the International Union of Pure and Applied Chemistry and the International Union of Pure and Applied Physics, resulting in credit for the discovery being officially shared between both teams. The element was for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henan
Henan (; or ; ; alternatively Honan) is a landlocked province of China, in the central part of the country. Henan is often referred to as Zhongyuan or Zhongzhou (), which literally means "central plain" or "midland", although the name is also applied to the entirety of China proper. Henan is a birthplace of Han Chinese civilization, with over 3,200 years of recorded history and remained China's cultural, economic and political center until approximately 1,000 years ago. Henan Province is home to many heritage sites, including the ruins of Shang dynasty capital city Yin and the Shaolin Temple. Four of the Eight Great Ancient Capitals of China, Luoyang, Anyang, Kaifeng and Zhengzhou, are in Henan. The practice of tai chi also began here in Chen Jia Gou Village (Chen style), as did the later Yang and Wu styles. Although the name of the province () means "south of the ellowriver.", approximately a quarter of the province lies north of the Yellow River, also known as th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hausa Language
Hausa (; /; Ajami: ) is a Chadic language spoken by the Hausa people in the northern half of Nigeria, Ghana, Cameroon, Benin and Togo, and the southern half of Niger, Chad and Sudan, with significant minorities in Ivory Coast. Hausa is a member of the Afroasiatic language family and is the most widely spoken language within the Chadic branch of that family. Ethnologue estimated that it was spoken as a first language by some 47 million people and as a second language by another 25 million, bringing the total number of Hausa speakers to an estimated 72 million. In Nigeria, the Hausa-speaking film industry is known as Kannywood. Classification Hausa belongs to the West Chadic languages subgroup of the Chadic languages group, which in turn is part of the Afroasiatic language family. Geographic distribution Native speakers of Hausa, the Hausa people, are mostly found in southern Niger and northern Nigeria. The language is used as a lingua franca by n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaluronan
Hyaluronic acid (; abbreviated HA; conjugate base hyaluronate), also called hyaluronan, is an anionic, nonsulfated glycosaminoglycan distributed widely throughout connective, epithelial, and neural tissues. It is unique among glycosaminoglycans as it is non-sulfated, forms in the plasma membrane instead of the Golgi apparatus, and can be very large: human synovial HA averages about 7 million Da per molecule, or about 20,000 disaccharide monomers, while other sources mention 3–4 million Da. The average 70 kg (150 lb) person has roughly 15 grams of hyaluronan in the body, one-third of which is turned over (i.e., degraded and synthesized) per day. As one of the chief components of the extracellular matrix, it contributes significantly to cell proliferation and migration, and is involved in the progression of many malignant tumors. Hyaluronic acid is also a component of the group A streptococcal extracellular capsule, and is believed to play a role in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypochondriasis
Hypochondriasis or hypochondria is a condition in which a person is excessively and unduly worried about having a serious illness. An old concept, the meaning of hypochondria has repeatedly changed. It has been claimed that this debilitating condition results from an inaccurate perception of the condition of body or mind despite the absence of an actual medical diagnosis. An individual with hypochondriasis is known as a hypochondriac. Hypochondriacs become unduly alarmed about any physical or psychological symptoms they detect, no matter how minor the symptom may be, and are convinced that they have, or are about to be diagnosed with, a serious illness. Often, hypochondria persists even after a physician has evaluated a person and reassured them that their concerns about symptoms do not have an underlying medical basis or, if there is a medical illness, their concerns are far in excess of what is appropriate for the level of disease. It is also referred to hypochondriaism which is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homosexuals Anonymous
Homosexuals Anonymous (HA) is an ex-gay group which practices conversion therapy and describes itself as "a fellowship of men and women, who through their common emotional experience, have chosen to help each other live in freedom from homosexuality." HA regards homosexual orientation as "sexual brokeness" that may be "healed" through faith in Jesus Christ. In common with other Christian fundamentalist groups, HA regards heterosexuality as "the universal creation-norm". This approach has been criticized for stressing that a person must renounce homosexuality to be a Christian, and because there is no valid scientific evidence that sexual orientation can be changed. Christopher Melilo, Colin Cook and Douglas McIntyre, who had all struggled with same-sex attractions, founded HA in 1980 with financial support from the Seventh-day Adventist denomination. HA uses a 14-step program developed by Cook, based on his own experiences. Cook resigned in 1986 following a scandal involving him al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroxylapatite
Hydroxyapatite, also called hydroxylapatite (HA), is a naturally occurring mineral form of calcium apatite with the formula Ca5(PO4)3(OH), but it is usually written Ca10(PO4)6(OH)2 to denote that the crystal unit cell comprises two entities. Hydroxyapatite is the hydroxyl endmember of the complex apatite group. The OH− ion can be replaced by fluoride, chloride or carbonate, producing fluorapatite or chlorapatite. It crystallizes in the hexagonal crystal system. Pure hydroxyapatite powder is white. Naturally occurring apatites can, however, also have brown, yellow, or green colorations, comparable to the discolorations of dental fluorosis. Up to 50% by volume and 70% by weight of human bone is a modified form of hydroxyapatite, known as bone mineral. Carbonated calcium-deficient hydroxyapatite is the main mineral of which dental enamel and dentin are composed. Hydroxyapatite crystals are also found in pathological calcifications such as those found in breast tumors, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Jim Henson Company
The Jim Henson Company (formerly known as Muppets, Inc., Henson Associates, Inc., and Jim Henson Productions, Inc.; commonly referred to as Henson) is an American entertainment company located in Los Angeles, California. The company is known for its innovations in the field of puppetry, particularly through the creation of Kermit the Frog and the Muppets characters. Brian Henson serves as chairman, while Lisa Henson serves as CEO. Since 2000, The Jim Henson Company is headquartered at the Jim Henson Company Lot, the historic former Charlie Chaplin Studios, in Hollywood. The company was established in November 1958 by puppeteers Jim and Jane Henson, and is currently independently owned and operated by their children. Henson has produced many successful television series, including ''The Muppet Show'' (1976–1981), ''Fraggle Rock'' (1983–1987), and ''Bear in the Big Blue House'' (1997–2006); as well, the company designed the Muppet characters for ''Sesame Street'' (1969–pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
He (letter)
He is the fifth letter of the Semitic abjads, including Phoenician Hē , Hebrew Hē , Aramaic Hē , Syriac Hē , and Arabic . Its sound value is the voiceless glottal fricative (). The proto-Canaanite letter gave rise to the Greek Epsilon Ε ε, Etruscan 𐌄, Latin E, Ë and Ɛ, and Cyrillic Е, Ё, Є, Э, and Ҩ. ''He'', like all Phoenician letters, represented a consonant, but the Latin, Greek and Cyrillic equivalents have all come to represent vowel sounds. Origins In Proto- Northwest Semitic there were still three voiceless fricatives: uvular , glottal , and pharyngeal . In the Wadi el-Hol script, these appear to be expressed by derivatives of the following Egyptian hieroglyphs V28' "thread", A28 ' "jubilation", compare South Arabian , , , Ge'ez , , , and O6 ' "court". In the Phoenician alphabet, ' and ' are merged into Heth "fence", while ' is replaced by ''He'' " window". Arabic hāʾ The letter is named '. It is written in several ways ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemagglutinin (influenza)
Influenza hemagglutinin (HA) or haemagglutinin ">/sup> (British English) is a homotrimeric glycoprotein found on the surface of influenza viruses and is integral to its infectivity. Hemagglutinin is a Class I Fusion Protein, having multifunctional activity as both an attachment factor and membrane fusion protein. Therefore, HA is responsible for binding Influenza virus to sialic acid on the surface of target cells, such as cells in the upper respiratory tract or erythrocytes, causing as a result the internalization of the virus. Secondarily, HA is responsible for the fusion of the viral envelope with the late endosomal membrane once exposed to low pH (5.0-5.5). The name "hemagglutinin" comes from the protein's ability to cause red blood cells (erythrocytes) to clump together ("agglutinate") ''in vitro''. Subtypes Hemagglutinin (HA) in influenza A has at least 18 different subtypes. These subtypes are named H1 through H18. H16 was discovered in 2004 on influenza A vir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
